I wouldn't be using that spindle on the current setup. I'm planning on building the X and Z axis out of C-Beam extrusions from Openbuilds with XL C-beam gantry plates joining them together.

I have looked at the 800W version of that spindle and it might be the one i buy. The 2.2kw one was just an example.

Also, removed most of the backlash on the X and Y axis using a couple of grub screws in the supposedly anti-backlash nut that comes with the machine. I don't know why it doesn't come like that as standard. It's such an easy fix and makes a big difference.

Cheers

NM